separation enrichment and determination of citric acid radical by means of liquid membrane

maintenance echelon; line of maintenance

维修约定级

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secret of water quality control and soil mass treatment of olympic water park

解密奥林匹克水上公园的水质保持和土体处理

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a cocktail of four drugs that target the seven diseases can then be used in mass treatment programmes.

然后治疗这7种疾病的4种药物的组合可以用于大规模治疗项目。

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mass treatment with ivermectin may reduce the incidence of head lice infestation and associated morbidity in resource-poor communities.

利用伊维菌素进行集体治疗，可能降低贫穷社区内头虱症感染的发生率以及头虱症导致的死亡率。

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mass treatment with ivermectin would be a new weapon against malaria complementing insecticide spraying bed nets and other drugs foy says.

福伊说，利用伊维菌素进行大规模治疗将会成为对抗疟疾的薪武器，可以作为杀虫喷雾剂、蚊帐和其他药物的补充。

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the cultivation technique of the high-yield star ruby currant

红宝石无核葡萄优质丰产栽培技术

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i have not seen star ruby and sapphire for a long time.

我没有看到星红宝石和蓝宝石有很长的一段时间。

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dishonor; lose power and influence

失掉权柄和势力

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xe pumping speed testing for molecular pump

分子泵对Xe气抽速的测试

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in this paper, the history of the molecular pump is introduced;

本文回顾了分子泵近百年的发展历史；

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the assembling of a dry molecular pump unit

无油分子泵机组的组装

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review and prospects for a century of molecular pump

分子泵的世纪回顾与展望

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therefore, the magnetic molecular pump can be used in a variety of vacuum field widely.

因此，磁悬浮分子泵能广泛应用于各种真空领域。

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would you keep a seat for me?

请你为我保留一个座位好吗？。

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e. g. we'd better keep a seat for him.

我们最好给他留个座位。

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eg, please keep a seat for me.

请给我留座位

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in order to get on or keep a seat, it was ignored conscience, or even harm to others.

为了坐上或保住座位，有人漠视良心，甚至伤害他人。

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i'll keep a seat for you.

我给你留个座位。

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i'll keep a seat for you in case you (should) change your mind.

我给你留下一个座位，说不定你会改变主意。

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please keep a seat for me in the reading room.

请在阅览室里为我留个座位。

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